crested lizard not eating by itself always static

Just brought home one, Day1 I put live cricket but did not take. Day 2 finger fed ate 2 cricket and 1 mealworm.. He rarely moves parang statue lang. Aquarium ok for his size with plants driftwood for climbing few rocks. is this normal barely moving and not eating independently? At the shop he was enclosed in a very small cage.. I wonder that he is not used to bigger space and seeing people.. I hope hes not sick